Home / 112,121.28-154,726.74-61,820.28

Finding the Fourth Proportional to 112,121.28, 154,726.74 and 61,820.28

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Solution

The fourth proportional to 112,121.28, 154,726.74 and 61,820.28 is: 85,311.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,121.28 : 154,726.74 = 61,820.28 : x
  2. Step 2: Convert to fraction form
    112,121.28/154,726.74 = 61,820.28/x
  3. Step 3: Cross multiply
    112,121.28x = 154,726.74 × 61,820.28
  4. Step 4: Simplify right side
    112,121.28x = 9,565,250,390.29
  5. Step 5: Solve for x
    x = 9,565,250,390.29/112,121.28
  6. Step 6: Final answer
    x = 85,311.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.